Miway insurance dont want to stop the insurance before deducting

Helo i want to cancel an insurance that my husband took it hasn't been debited yet.. And i dnt want it.. Please i am no longer working and the charges will **** me because i was told it cannot be canceld i hv to wait for it to debited then i cn reverse... I cnt lose even R1 on the charges i wil be getting..the car its in my name and my account was used for debiting. .. I dont want it please help me . How can it be not canceled even on the app it says error when i try to cancel it.. I dnt want to be reversing money , just cancel andbnot debit.